To monitor the three events in Azure Monitor, you need to create 3 separate rules for each requirement. When you open from Azure Monitor blade the Alerts screen and select the "New Alert Rule" link, the Azure portal opens the "Create alert rule" screen (Number 1). You need to fill the sections on this panel. First, you select a scope for the monitoring (Number 2): your VM, subscription, and resource group. Then, you choose the Activity Log event (signal) to trigger the alert (Number 3) under the Condition section. You can create only one alert per event (Number
4). Next, you add an Action group that will send a notification email (Number 5), provide a rule name, and create it.

After creating three alert rules, you can review them on the "Alert rules" screen.

And you can review the Action group on the "Manage actions" screen as well.

In the end, you have three rules and one action group.
Reference:
https://docs.microsoft.com/en-us/azure/azure-monitor/platform/alerts-overview